Grain-separator



(N0 Mpdel.) 3 Sheets-Sheet 1.

A. J. ETZOLD. GRAIN SEPARATOR.

No. 415,709. Patented Nov. 26, 1889..

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(No Model.) 3 Sheets-Sheet 2.

A. J. ETZO LD. GRAIN SEPARATOR.

I. 11 1 I v 1! Patented Nov. 26, 1889..

WITNESS/5Q (No Model.)

3 Sheets-Sheet 3.

A. J. ETZOLD. GRAIN SEPARATOR.

N0. 415,709. Patented NOV. 26, 1889.

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UNITED STATES PATENT OFFICE.

ALBERT J. ETZOLD, OF DETROIT, MICHIGAN.

GRAIN-SEPARATOR.

SPECIFICATION forming part of Letters Patent No. 415,709, dated November26, 1889.

Application filed November 6, 1888. Serial No. 290,093- (No model.)

To all whom it may concern.-

Be it known that I, ALBERT J. ETZOLD, of Detroit, in the county of Vayneand State of Michigan, have inventeda new and Improved Grain-Separator,of which the following is a full, clear, and exactdescription.

The object of the invention is to provide a grain-separator with thegreatest possible area of screens, sieves, or separators, and soconstruct said screens or sieves that they may be readily cleaned andthe chances of the mesh or perforations becoming clogged up reduced to aminimum; and the object of the invention is also to provide a meanswhereby the screens or sieves and the imperforate drums employed may bequickly and conveniently adjusted, removed, and replaced.

The invention consists in the devices employed and in the novelconstruction and combination of the several parts, as will behereinafter fully set forth, and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar figures and letters of referenceindicate corresponding parts in all the views. v

Figure 1 is a side elevation, mainly in longitudinal central verticalsection. Fig. 2 is a front elevation, parts being broken away. Fig. 3 isa rear elevation, parts being broken away. Fig. 4 is a detail sectionthrough a portion of a separating-drum,illustratin g the method ofsecuring the same to the rib. Fig. 5 is an enlarged end view of thedrum-shaft and its rocking mechanism. Figs. 6 and 7 are detail viewsillustrating the construction of the separating or screen drum. Fig. 8is an elevation of one section of a modified form of separating orscreen drum, and Fig. 9 is an end view of the same.

In carrying out the invention a suitable frame 10 is provided for themachine, covered at the top by a hood 11, at the forward end of which islocated a feed mechanism. (Not claimed herein, and which need not befurther described.) Below the feed mechanism a chute 32 is secured fordelivering the grain or seed into the inner one of a series ofalternately arranged and attached separating and. delivery drums 33 and34.. The

liverydruins 34 are constructed of solid sheet,

metal.

The several separating or screen and the delivery drums are attached oneto the other and are readily detachable from the machine.

The separating or screen and the delivery drums are secured to andcarried by .a horizontal shaft 35, journaled in the frame of themachine, and the combination of the drums and their attachment to theshaft is effected in the following manner: Each separating and deliverydrum is made up of a series of longitudinal sections, usually four,united by a corresponding number of ribs 36, provided with alongitudinal groove 37 in the under face and a binding-block 38, looselyfitting in said groove from end to end thereof, as best shown in Fig. 4.Threaded radial arms 39 are passed through the clamping-ribs, one armnear each end, the inner ends of which arms are screwed into tappedsockets in hubs 40, rigidly attached to the drum-shaft, as bestillustrated in Figs. 1 and 3.. The spaces between the blocks 38 and thesides and bases of the grooves in the ribs form angular ways to receivethe correspondingly shaped flanges on the longitudinal edges of thesegmental screen-sections. The ribs are therefore each provided withparallel ways openin g on their inner faces. The blocks or bars 38 aresupported against inward movement on the rods by the lower nuts 41. Theinner faces of the blocks or bars are flush with the inner sides of thescreen or separator drums, so that unbroken working-surfaces will bepresented. A clip 4-1 is made to embrace the top of the several ribs,the said clip. being located upon the radial arm and held in firmcontact with the rib by an upper locknut 42. Thus theradial arms andclampingribs are at all times fixedly secured to the drum-shaft, and anyone or all of the drumsections may be removed and other drumsectionssubstituted to suit the various requirements of the work. This isaccomplished by removing one or more of the nuts 50, to permit theremoval of one or more of the flanged drum-cap sections on the front orlarger end, and removing many of said cap-sections as it is desired toremove drumsections.

The drums, which are essentially conical, may be arranged in anyapproved manner, but are preferably grouped as shown, in which the innerdrum A is perforated or reticulated and is given a pitch in direction ofthe rear. The second drum A, surrounding th first or inner drum, is madeof solid sheet metal, having a pitch in direction of the forward end ofthe frame, and the said sheet-metal drum is of shorter length than thereticulated drum and spaced a distance therefrom. A third drum A similarto the inner drum A, of equal length therewith, and also inclined indirection of the rear, is made to encircle the intermediate sheet-m etaldrum A, as best shown in Fig. 1. A fourth and outer metal drum A is alsoemployed, having an inclination in direction of the front, the saidouterdrum A being slightly shorter than the next drum A I desire it tobe understood thatthe form of the drums may be varied, likewise thearrangement, or more or less drums may be employed than is illustrated,without departing from the spirit of the invention.

In the front end of the drums detachable cap-flanges 423' areintroduced, closing the end of the inner drum, excepting a circularspace aroundthe shaft large enough to admit the end of the chute 32, andalso a space between the outer and third drum. In like manner are thespaces 011 the rear or back end of the drums closed with sectionalcap-flanges 43 between the inner and second and between the third andoutside drums. The flanges of the cap-sections are folded uponthemselves to produce one inward fold 47, which is brought in contactwith the cylinder and an outwardly-extending member 48. This is theconstruction where the section is to be secured to the clampingdrum-ribs, as shown in Fig. 6. A bolt 49 is riveted in the rib, theouter end whereof is threaded, and the flange member 48 is brought incontact with the end of the rib and held by a nut 50, screwed upon thebolt.

The flange-section shown in Fig. 7 illus trates the constructionemployed when used between the ribs, the said flange being bent uponitself to form a spaced overlapping seamed groove 51, adapted to receivethe end of the drum.

At the forward end of the machine a chute 52 is secured to a suitablecross-beam 53 in such manner that it will receive the ma-' terialdischarged from the outer drum, and a second chute 55 is provided at therear, extending out from the side, so located as to receive the materialdischarged from the inner drum. Another chute 56 is located at the rear,adapted to receive the material passing out from the third drum. Thechute 56 e011- ducts the grain or seed from the drum, and the remainingchutes the impurities. The chute 56 discharges into a cleaningapparatus. (Not claimed herein, and hence not necessary to describe.)

By reference to Figs. 1 and 5 it will be observed that a ratchet-wheel69 is secured to each outer end of the drum-shaft, which wheels, whenrevolving, engage with the irregular face of a block 7 O, securedrigidly to the frame, and cause a jarring motion to be imparted to thedrums for the purpose of cleaning them, or when such motion is desirablein the cleaning process. The drumshaft is driven from a transverse shaft71, journaled in the frame at the rear and provided with a worm 72,meshing with a worm-gear 7 3, secured upon the d rum-shaft. The worm ordrive-shaft is provided with a driving-pulley 74 and other pulleyssuitably located for communicating motion to the other shafts, as bestillustrated in Fig. 3. An arm '7 5 is sleeved upon the drum-shaft, andlikewise upon the worm-shaft, and serves to hold the worm and worm-wheelin proper position to each other when the ratchet-wheels are in use andthe drum-shaft rises and falls. For this reason the bearing cl of thework-shaft is pivoted and the opposite bearing (1' is elongated, so thatthere is a corresponding swing of the shaft upon the pivoted hearing.The ratchetwheels may be readily detached and removed.

In Figs. 8 and 9 a modified form of the separating drums is illustrated,in which slight projections or ridges '76 are formed on the length ofthe sections to accelerate or retard the motion of the grain or seed inits passage through the drums. Accelerating-cylinders may be employed,for instance, where the grain or seed is not very unclean, and yet needsfurther cleaning. Suppose a standard-size machine of perhaps four orfour and a half feet drum length were in use. To effect an economicaluse of the machine, the grain should be hurried through, and to that enddrum-sections are inserted with ridges so formed as to accelerate themovement. 011 the other hand, if the grain or seed contains an unusualamount of impurities, drum-sections are inserted with the ridges soformed as to retard the progress of the grain or seed through the drums.

The drum illustrated in Fig. 8 is provided with spiral ribs arranged toaccelerate the motion of the grain; but when the direction of said ribsis reversed a retarding motion is obtained. v

From the foregoing description, read in connection with the drawings,the operation will be readily understood.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a grain-separator, a drum consisting in a series of segmentalsections, a circular series of ribs having ways receiving thelongitudinal edges of said sections, and removable caps embracing theends of the drum, substantially as set forth.

2. In a grain separator, a conical drum formed of a series of segmentalsections, a circular series of ribs having ways receiving thelongitudinal edges of said sections, and removable end caps embracingthe ends of the drum, the cap at the larger end of-the drum being inremovable sections correspon ding in number and position with thedrumsections, substantially as set forth.

- 3. In a grain-separator, a drum consisting in a series of segmentalsections, a circular series of ribs-having longitudinal ways re ceivin gthe longitudinal edges of said sections, bolts projecting from the endsof said ribs, removable sectional end caps having apertures throughwhich said bolts pass, and nuts 011 the bolts retaining saidcap-sections in place, substantially as set forth.

4. In a grainseparator, a screen or separator-drum provided withremovable screensections having ridges on their inner sides and ribshaving Ways receiving the edges of said sections, substantially as setforth.

5. The combination, with the drum having removable sections and the ribshaving Ways therefor, of the detachable. cap-sections secured to thefront end of the drum and having an inward fold contacting with thedrum,

substantially as set forth.

6. The combination, with thedrum having removable sections and the ribshaving ways for the edges of said sections, of the detachablecap-sections inclosing the drum ends,

arms, nuts on the bars holding said ribs and blocks properly spaced, theremovable drumsections having angular flanges along their edges fittingin the Ways formed between said blocks and ribs, the detachablesectional end caps for said drums, and the inlet and outlet chutes, theinn er drum being perforated and the outer one imperforate,substantially as set fort-h.

8. The combination, with the shaft of a separating-drum having ratchetson its ends engaging irregular-faced blocks and a wormwheel on saidshaft, of a Worm-shaft having one end held in a pivoted bearing and itsother end vertically movable and a spacingarm sleeved upon thereel-shaft and Wormshaft, substantially as shown and described.

ALBERT J. E'lZOLD.

\Yitnesses:

HERMANN KAUFMANN, THEODORE W. ETZOLD.

